By the fourth grade, I graduated to an erector set and spent many happy hours constructing devices of unknown purpose where the main design criterion was to maximize the number of moving parts and overall size.

So imagine a world 6 degrees warmer. It's not going to recognize geographical boundaries. It's not going to recognize anything. So agriculture regions today will be wiped out.

A cap and trade bill will likely increase the costs of electricity. . . . These costs will be passed on to the consumers. But the issue is, how does it actually...how do we interact in terms with the rest of the world? If other countries don't impose a cost on carbon, then we would be at a disadvantage. . . . We should look at considering duties that would offset that cost.

Since I walked in the door as secretary of energy, I've been doing everything in our powers to do what we can to reduce these gas prices. ... So, of course we don't want the price of gasoline to go up; we want it to go down.

As the saying goes, the Stone Age did not end because we ran out of stones; we transitioned to better solutions. The same opportunity lies before us with energy efficiency and clean energy.

Let me state what the official IPCC prediction is: Sea levels could go up as much as three-quarters of a meter in this century, but there is a reasonable probability it could be much higher than that.

Just refrigerator efficiency saves more energy than all that we're generating from renewables, excluding hydroelectric power... I cannot impress upon you how important energy efficiency is. It doesn't mean you eat lukewarm food and your beers are lukewarm. You can still have it; you just make a better thing